Malicious PDF — malware analysis report

Static analysis result for SHA-256 6354abbc8485d96f…

MALICIOUS

PDF

88.5 KB Created: 2021-08-29 16:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9a0c3a47034ce23e778c58c70797da1e SHA-1: 9cdca61533ac84d21f4d211f0334ed85a785a528 SHA-256: 6354abbc8485d96f616f76ab39dc9fe21e48de13c27f71f1173e696766169f64
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external URIs and link farm heuristics, indicating it is designed to redirect users to potentially malicious websites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the nature of PDF link farms often involves JavaScript for redirection or obfuscation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://infrive.ru/uplcv?utm_term=words+with+aj+in+them PDF link annotation
    • http://tetraeng.it/userfiles/files/jepadezet.pdfIn PDF document text
    • https://heritran.vn/uploads/news_file/kajipatizokolejawole.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0013e4f0a---23288424720.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/ae63c53456c81d906662e85b6502e6ab/45944399847.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/3637211785.pdfIn PDF document text
    • https://soechi.com/userfiles/file/vamutasuguzafanaseduki.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/1281228787.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d185963d92---kejozofifepefoberalowe.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160adaab00b0a6---31079750924.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62b789476---22722359133.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/kopowave.pdfIn PDF document text
    • http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/65973442030.pdfIn PDF document text
    • https://www.sterlingsez.com/ckfinder/userfiles/files/wafowaweletukeleposefosiv.pdfIn PDF document text
    • http://transinfosoft.com/userfiles/file/97967756729.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607288fb50802---57983236604.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/fenizikelexumasutesava.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/totvj2n4trr82o9ro66u17bqt7/32782228817.pdfIn PDF document text
    • https://kitapkaplama.com/upload/ckfinder/files/jafav.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160705f785ece8---repewefaduwujemu.pdfIn PDF document text
    • http://raczcsalad.hu/files/76119802838.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/fcsejsm2d4d6ah3ndl5p996hk2/kagedufe.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/64719492594.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF717 10676 bytes
SHA-256: 2b0aa21443880e1d61d29d756f6fb3d078394c3e76db4d1dff2d8e672246bf47
font_01_sfnt_off00010f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12778 17456 bytes
SHA-256: 0680f5fe18c26aa960ada4db01cd86afce1dd4fa34063042a941b4aff607672a

Open this report in the interactive analyzer, or submit your own file for analysis.